Improvement in fruit-driers



o. F. TIFFANY.

FRUIT-BRIEF..

Patented May 2,1876.

Vit messes MM f fm Y nventor mam/@ZU f@ .y @l @ZZ/J www NJE'ERS,PHOTO-LITHOGRAFHEH. WASHINGTONV D C.

"UNITED 4S'IArns OSCAR TIFFANY, OF SAN FRANCISCO," CALIFORNIA.

IMPRQVEMNT IN FRUIT-Damas.

Speclcation forming part of Letters Patent No 177,032, dated May 2,1876; application filed Aprn 3, 1816. y

To all 'whom it may concern: i' i Beit known that I, OSCAR F. TIFFANY,of

thecity and" county of San Francisco, Stateof California, have inventedcertain new and use-` ful Improvements in Fruit-Driers; and ,I do

hereby declare-that the followingdescription and accompanying drawingsare sufficient to enable 'any person skilled .in the art or science towhich it most nearly appertains to make Y gallel chambers ordrying-passages, arranged onev above the other, communicating throughhatchways, and provided with elevators, and

a furnace -located'below the lowest chamber, and a draftstack above theupper chamber, as hereinafter more fully described and claimed.

- It also lconsists in V-'shaped roofs or ceilings of thedrying-chamber, combined with gutters arranged immediately beneath them,'and com- .municating with other gutters, for carrying off the water ofcondensation to the'outside of the chambers. v

Figure lis a vertical longitudinal section of my fruit-'drier'. Fig. 2is a transverse section. Fig. 3 is a transverse section through thehotair chamber, exposing the furnace.

-Referring by letter to the drawing, let A represent theheating-furnace, surrounded byl a hot-air chamber, l, formed by a casing, l0, and havingan outlet, 2, and a damper, b, for regulating the dowof hot air into the passage C. A cool-air passage, d, is locateddirectly above this furnace, and leads from the exterior to the passageC,"and is provided with a damper, e, for regulatin g the dow of air,which, in passing over the furnace, is somewhat heated .beforeminglingwith the highly-heated air in the passage C. The slide f is used forclosing the outer end of the flue d, when desirable.

This construction of air-dues has great advantages, iuv saving fuel, anda perfect regulation in temperature. The cool air, inpassing through d,becomes .heated to 'a desirable degree from the caloric of the samefurnace that furnishes theintensely-hot air, and, passing over thediaphragm @absorbs someof the heat from the current in passage 2, sothat the two currents approach a mean temperature as they approach theend ofthe diaphragm, wherel they mingle. lThe-flue d insulates thefurnace froln the machine above it, and obviates danger from re bydirect con tact.

Theupper casing g is provided with twol or.. I

more parallel drying-chambers, h h h, arranged one above the other, andhaving communicating hatchways at their yalternate ends, so that theywill communicate with each other and with airpassage C by means of a'damper, 3. The upper chamber is provided with a stack or exit-flue, 4.The frames which convey the fruit through the chambers consist ot'several perforated metallic -plates or shelves, l, supported 'upon atruck-frame by the corner-posts m, and arranged so thatthc lower-shelvesmaybe slid from under the upper, for convenience in loading andunloading thecar. These cars are passed into the lower drying-chamberthrough a door, n, at the end opposite the furnace, and set upon tlr'etracks o, which are laidl upon the several doors-,of thedrying-chambers, so that the cars will be easily moved along as othersare passed in. t

The temperature of the air within the dryingehamber lessens as' thedistance from the furnace increases; and for the purpose of shifting theloaded trucks, so that the requisite dcgree of temperature and moisturemay be obtained, I provide an elevator, p, at each end of the passage,which is arranged to work vthrough the hatchways z', `and be operated byropes and pulley-'wheels, or other suitable means, from theoutside ofthe drier. Thesey elevators are provided with short tracks,corresponding with the tracks of the dryingchambers, so that when the,elevators are raised or lowered to a level with either floor the trucksmay be withdrawn and elevated to the next upper passage, while the carsare moved forward on themain tracks.

Movable. hatches R R close, or partially' close, the hatchways t' i, asdesired, in order to regulate the amount off-heated airk to be admittedto the chambers. t Y

In order.to carry off the water which arises from the condensation ofthe saturated atmos- PAfrmv'I FFICE which lead through. the l' thecasing.

Ielaiinas new, and

W `nry fire-box Iam enabled to nialreianintense t f heatto eifeet'aslight draftthrough the dr'iergf i `or a heavy draft through thedrierreil'ee'ted g i only by a slight heat,` thedraftlthrough the Vre'hox andthe draft through the "drier heiifgjgj "entirelyindependent ot eachother.` Chenin-gs] liirixish air to `the hotair chamber around thlire-box A. An opening, H8, 'controlled 'by edmninnieatesthe outer airto aipipe, 9, lead-fngdireet to the draftof jthefre-box. By this.V

\ ineens none of `the airhfrom the hot-air Cham- `lnrpassesthroughtirelire-box;

Having thnsdeseribed myinventiomwhatf Patent,"is

L The `com desire toseere by'Letters; l

` v hination, in a drieryofa fnrnaee or heater, a surrounding hot-airehambenand? a snleriosedfreshgfiirl ge the tivo latten adapted tofondnttheir itents*totheidry` ing-chamber in parallel lines, and `to dischargethem together intotheldryingfehamber after n theyare eommingled. i 2.`Thediaphragm"mit,having abovejitthe opening d to the outer air and`damper "e, in eolunhhinationwxyith the i hot-airj` chamber 1` andopening-2, 'lrovidedqvitha danriper,` b1s nb` stantially asdeseribed,and fortlie purpose set forth; Qi 3L'"Inafrnitldrier;a`serieslofflorizontal11575` i Y ing-chambers, l1l h"hf", arranged in@ differenti` planes, provided with traeksp `o,`olexatorslp p ,u `andi doors ma', fn i.`, r,` and 1f/, comindni#wleatingfat alternateendsfhyzlneans "ofhateh` Ways ihzlelos'ed hy "`l`o`\tahle "hatehesiRl "ing fenibination withafnrrrae `A," loeated" thelowest ohambeaandadraftstaokla ox the n'nper; chain ber,` asdefSeribed fately beneath each angleofitheroof;andthe side gutters u,tofoo`nduotqthe water outside

